Weather Question

[George Foster]

I've noticed that the highest cloud cover reported seems to peak out at 25000 feet. I'm curious, is there a meteorological reason why bases don't form higher than 25000, or do the ASOS/AWOS systems simply not report higher than 25000?

 

[GeorgeC]

Instrument limitation.

 

[Dana]

The ASOS at my field only reports to 12,000'.

 

[George Foster]

Thx....